Jefferson County, Illinois Tax Assessors' Office

Where is the Jefferson County Tax Assessor's Office?

The Jefferson County Tax Assessor Office is located at 100 South 10th Street, at the County Courthouse building in Mt. Vernon, Illinois.

What can the Jefferson County Assessor's Office do for me?

The Jefferson County Tax Assessor's Office oversees the appraisal and assessment of properties as well as the billing and collection of property taxes for all taxable real estate located in Jefferson County.

Submitting a Jefferson County property tax appeal

If you believe that your house has been unfairly overappraised (i.e. appraised at a value higher than the true market value of the property), you can attempt to get your home re-appraised at a lower value by contacting the Assessor's Office to submit a property tax appeal.

You will have to submit a form describing your property and sufficient proof that it is overassessed, including valuations of similar homes nearby as evidence. If your appeal is accepted, your home assessment (and property taxes) will be lowered as a result.

If you would like to appeal your property, call the Jefferson County Assessor's Office at (618) 244 8016 and ask for a property tax appeal form. Keep in mind that property tax appeals are generally only accepted in a 1-3 month window each year.

The median home value in Jefferson County is between $83,164.00 and $88,436.00. Property tax rates are based on property values.

How can I contact Jefferson County?

You can try contacting the Jefferson County local government directly with any issues the Assessor's Office can't solve. In many counties, certain property records such as deeds are kept in the county courthouse or county archives instead of at the tax assessors' office.

The county seat for Jefferson County is located in the County Courthouse in Mount Vernon, which is where the Jefferson County Assessors' Office is also located. You can direct your general inquiries to Jefferson County with the contact info listed below.